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PersistenceProvider::BeginUpdate Method (Object^, TimeSpan, AsyncCallback^, Object^)

.NET Framework (current version)

Other Versions

When implemented in a derived class, represents the beginning of the Update phase. The Update phase occurs when service state data is updated in the persistence store.

Namespace: System.ServiceModel.Persistence
Assembly: System.WorkflowServices (in System.WorkflowServices.dll)

Syntax

C++

public:
virtual IAsyncResult^ BeginUpdate(
	Object^ instance,
	TimeSpan timeout,
	AsyncCallback^ callback,
	Object^ state
) abstract

Parameters

instance: Type: System::Object^
The actual instance state.

timeout: Type: System::TimeSpan
The time period after which the persistence provider aborts this attempt.

callback: Type: System::AsyncCallback^
The method to be called when the operation is completed.

state: Type: System::Object^
A user-provided object that distinguishes this particular asynchronous operation from other operations.

Return Value

Type: System::IAsyncResult^

The state of the BeginUpdate asynchronous method call.

Examples

The following code demonstrates how to implement the BeginUpdate method.

public override IAsyncResult BeginUpdate(object instance, TimeSpan timeout, AsyncCallback callback, object state)
{
    base.ThrowIfDisposedOrNotOpen();
    return this.factory.BeginUpdate(this.Id, instance, timeout, callback, state);
}

Version Information

.NET Framework
Available since 3.5